地球科学

• 碱玄岩

  The rock types are tephrite and alkali olivine basalt. They are low-part-melt primary magma in the upper mantle,continent rift vally basalt , which are not mixed with any substance from the Crust.

  岩石类型为碱玄岩和碱性橄榄玄武岩，是上地幔低度部分熔融的原生岩浆，上升过程中未受到地壳物质的混染，为大陆裂谷型玄武岩。